dialog.SaveDialogOption's defaultPath fails if the file already exists

[OJFord]

Describe the bug

The defaultPath given to dialog.save, if it's a filename, only works if it doesn't already exist.

Otherwise, the default filename is blank, and the directory open for selection is the parent of tauri.conf.json, as if it wasn't provided.

To Reproduce

$ touch /tmp/test.txt

dialog.save({
  defaultPath: "/tmp/test.txt",
})

Expected behavior

• filename is defaulted to test.txt
• directory is defaulted to /tmp

Screenshots

N/A

Platform and Versions (required):

$ cargo tauri dev
Operating System - Arch Linux, version Unknown X64

Node.js environment
  Node.js - 17.3.0

  @tauri-apps/cli - 1.0.0-beta.10


  @tauri-apps/api - 1.0.0-beta.8

Global packages
  npm - 8.3.0
  pnpm - Not installed
  yarn - 1.22.17

Rust environment
  rustc - 1.56.0
  cargo - 1.56.0

App directory structure
/components
/dist
/src-tauri
/node_modules

App
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error("unexpected character '^' while parsing major version number")', src/info.rs:637:45
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Additional context

N/A

Stack Trace

N/A

[lucasfernog]

Tracking this here: rfd#35

[lucasfernog]

This was fixed on the RFD end, we'll update it when they release a new version.